WO1999062781A1 - Tamper evident slider zipper - Google Patents
Tamper evident slider zipper Download PDFInfo
- Publication number
- WO1999062781A1 WO1999062781A1 PCT/US1999/012244 US9912244W WO9962781A1 WO 1999062781 A1 WO1999062781 A1 WO 1999062781A1 US 9912244 W US9912244 W US 9912244W WO 9962781 A1 WO9962781 A1 WO 9962781A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- plastic film
- sheet
- bag
- side walls
- strips
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/16—End- or aperture-closing arrangements or devices
- B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
- B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
- B65D33/2516—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor comprising tamper-indicating means, e.g. located within the fastener
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2401/00—Tamper-indicating means
- B65D2401/60—Tearable part both of the container and of the closure
Definitions
- the present invention relates to reclosable plastic bags with slider zippers and tamper evidence.
- the Herrington U.S. Patent 5,007,143 shows a zipper profile which is opened and closed by a slider that is grasped by the user for opening and closing the bag. It is desirable in certain situations to provide tamper evidence to the user of a reclosable bag.
- the Hustad et al. U.S. Patent 5,456,928 is an example of a patent disclosing a reclosable bag for use with food products which has tamper evident means incorporated therein. There are certain situations, for example, where a slider zipper reclosable bag is used to contain a product that is being marketed and it is also desirable to provide tamper evidence.
- One embodiment of the invention might include a plastic film bag having a pair of side walls which are secured to one another and define a mouth of the bag.
- a reclosable fastener extending along the mouth of the bag and secured to the side walls.
- the fastener includes a pair of flexible fastening strips secured to the side walls and including reclosable interlocking rib and groove profile elements on the respective strips.
- a slider straddles the fastener for opening and closing the fastener.
- the slider includes a depending separator extending between the flexible plastic strips.
- a sheet of plastic film closing the mouth of the bag which sheet is capable of rupture to provide access and tamper evidence.
- each of the pair of side walls of the plastic film bag has an upper region that forms a sheet of plastic film disposed between the side walls for closing the mouth of the bag.
- one of the pair of side walls of the plastic film bag is secured to the inner face of one of the pair of flexible plastic strips and the other of the pair of side walls is secured to the inner face of the other of the pair of flexible plastic strips.
- the sheet preferably forms at least one curved region. The sheet allows the flexible plastic strips to separate from each other a greater distance when the rib and groove profile elements are in a non-interlocked configuration.
- one of the pair of side walls is secured to an outer face of one of the pair of flexible plastic strips and the other of the pair of side walls is secured to an outer face of the other of the pair of flexible plastic strips.
- FIG. 1 is front elevational view of a reclosable plastic bag including the tamper evident zipper slider of the present invention.
- FIG. 2 is a fragmentary perspective view of a portion of the structure of
- FIG. 2A is a view similar to FIG. 2 of an alternative embodiment of the present invention.
- FIG. 3 is a vertical section taken along the line 3-3 of FIG. 2 in the direction of the arrows.
- FIG. 4 is a vertical section taken along the line 4-4 of FIG. 2 in the direction of the arrows.
- FIG. 5 is a bottom plan view of the slider of the present invention.
- FIG. 6 is a section taken along the line 6-6 of FIG. 5 in the direction of the arrows.
- FIG. 7 is a vertical section similar to FIG. 3 of an alternative embodiment of the present invention.
- FIG. 7A is a front elevation similar to FIG. 1 of the alternative embodiment of the present invention.
- FIG. 7B is a view similar to FIG. 7 of an alternative embodiment of the present invention.
- FIG. 7C is a view similar to FIG. 7A of a further alternative embodiment of the present invention.
- FIG. 8 is a vertical section taken through the zipper slider and the bag of FIG. 1.
- FIG. 8A is a view similar to FIG. 8 of an alternative embodiment of the present invention.
- FIG. 9 is an enlarged fragmentary view similar to FIG. 8.
- FIG. 9A is an enlarged fragmentary view similar to FIG. 8A.
- FIG. 10 is a view similar to FIG. 8 of an alternative embodiment of the present invention.
- FIG. 10A is a view similar to FIG. 10 of a further alternative embodiment of the present invention.
- FIG. 11 is a fragmentary perspective sectional view of an alternative embodiment of the present invention.
- FIG. 12 is a view similar to FIG. 11 of a further alternative embodiment of the present invention.
- FIG. 13 is a view similar to FIG. 12 of another alternative embodiment of the present invention.
- FIG. 14 is a view similar to FIG. 13 of a further alternative embodiment of the present invention.
- FIG. 15 is a view similar to FIG. 14 of another alternative embodiment of the present invention.
- FIG. 16 is a view similar to FIG. 15 of a further alternative embodiment of the present invention.
- a plastic bag 1 1 which consists of a pair of side walls 12 and 13 which are connected together at the bottom and at the sideward edges 16 and 17 of the bag.
- the connection at the bottom 15 may be merely by folding a single sheet of plastic to produce the two side walls 12 and 13 or may be by actual melting and cutting or adhering the two side walls together by adhesive.
- the side edges 16 and 17 are frequently formed by melting the two side walls together and then by cutting apart from the adjacent side walls of further bags being produced.
- the two side walls 12 and 13 define a mouth 20 of the bag along which a reclosable fastener 21 extends.
- the fastener includes a pair of flexible plastic strips 22 and 25 which are secured to the side walls 12 and 13 and include reclosable interlocking rib and groove profile elements 26, 27, 30 and 31.
- the reclosable fastener further includes a flange 32 which functions to close over the top of the fastener when it is in closed position.
- a slider 35 is arranged to straddle the fastener 21 for opening and closing the fastener.
- the slider 35 has a fixed separator member 36 which extends down between the profile elements 26 and 30 for the purpose of separating them and opening the fastener when the slider is moved rightwardly as viewed in FIG. 2.
- FIG. 3 shows the slider section taken along the line 3-3 of FIG. 2 and shows the profile elements in open condition.
- FIG. 2A The embodiment depicted in FIG. 2A is identical to that shown in FIG. 2 with the exception that side walls 12 and 13 are attached to flexible plastic strips 22 and 25, respectively, such that interference of the side walls with slider 35 is minimized.
- the slider is retained on the fastener elements by shoulders 43 and 44 which are also formed on the fastener elements.
- the slider has inwardly projecting flanges 38 which engage the shoulders 43 and 44 to retain the slider on the fastener.
- the reclosable fastener has formed homogenously and coextensively therewith a sheet of plastic 40.
- This sheet of plastic 40 may be extruded along with the fastener elements 22 and 25 but has a somewhat less thick construction than the strips 22 and 25 and particularly the web portion thereof 41 and 42.
- the embodiment shown in FIG. 8A is identical to that shown in FIG. 8 with the exception that side walls 12 and 13 are attached to flexible plastic strips 22 and 25, respectively, such that interference of the side walls with the slider (not shown) is minimized.
- the present bag be used frequently in situations where the bag is filled at the factory with a product and then is marketed to the consumer. The consumer then buys the bag and is reassured that it has not been tampered with because the closure 40 is in place and needs to be ruptured before the consumer can use the contents of the bag. If the consumer does not wholly consume the contents he can then reclose the bag and use it further to contain the partially filled bag.
- FIG. 10 An alternative embodiment of the reclosable fastener of FIG. 8 is shown in FIG. 10 and involves a tamper evidence closure 50 that extends between the walls or webs 41 ' and 42' of the reclosable fastener elements 22' and 25'.
- the construction of FIG. 10 is extruded in a similar fashion to the construction of FIG. 8.
- the embodiment shown in FIG. 10A is identical to that shown in FIG. 10 with the exception that side walls 12 and 13 are attached to flexible plastic strips 22' and 25', respectively, such that interference of the side walls with the slider (not shown) is minimized.
- FIGS. 7 and 7A Still another alternative embodiment of the invention is illustrated in FIGS. 7 and 7A.
- the reclosable closure and slider are identical to those above described except that the sheet 40 is eliminated.
- the tamper evident slider bag of FIG. 7 has a sheet 60 which forms a hood that covers and surrounds the reclosable closure 70 and the slider 71 of the bag of FIGS. 7 and 7A.
- the embodiment of FIG. 7 will be provided with perforations 72 which facilitate removing the tamper evident sheet 60. If desired perforations may also be provided in the embodiment of FIG. 8 such as for example at the location 61.
- the embodiment depicted in FIG. 7B is identical to that shown in FIG.
- FIG. 7C is identical to that shown in FIG. 7A with the exception that the length of sheet 60 is decreased so that its edges are coextensive with the sideward edges 16' and 17' of the bag.
- side wall 113 is secured to outer face 81 of flexible plastic strip 125 at region 102 and side wall 112 is secured to outer face 80 of flexible plastic strip 122 at a similar location (not shown).
- the side walls may be secured to the flexible plastic strips by methods known in the art, including heat sealing and use of adhesives.
- Film 100 typically extends along planes parallel to a plane passing between inner face 82 and outer face 80 of flexible plastic strip 122 and a plane passing between inner face 83 and outer face 81 of flexible plastic strip 125. However, film 100 may also extend along planes oblique or a plane perpendicular to a plane passing between inner face 82 and outer face 80 of flexible plastic strip 122 and a plane passing between inner face 83 and outer face 81 of flexible plastic strip 125 in this and the other embodiments discussed. Film 100 preferably has at least one curved region 101.
- the length of side walls 112 and 113 that form film 100 is typically that which allows the flexible plastic strips to separate from each other a greater distance when the rib and groove profile elements 126, 127, 130 and 131 are in a non-interlocked configuration and can be determined by one skilled in the art. In this way, film 100 acts as a gusset, thus allowing easier access to the film of plastic film bag 111.
- the sheet of plastic film 100 preferably has a plurality of perforations for facilitating its rupture.
- the plurality of perforations is preferably located in curved region 101 but may be located at other places on film 100 as one skilled in the art would appreciate. Alternately, film 100 may be ruptured by cutting.
- the embodiment depicted in FIG. 12 is identical to that shown in FIG. 11 with the exception that curved region 101 of film 100 is replaced by a double layer of film joined together and defining a seal 130 that extends along the width of film 100 and film 100 extends along planes oblique to a plane passing between inner face 82 and outer face 80 of flexible plastic strip 122 and a plane passing between inner face 83 and outer face 81 of flexible plastic strip 125.
- Seal 130 may involve the two ends of film being secured together or may involve collapsing and sealing curved region 101.
- Base 131 of seal 130 may be weakened as a result of formation of the seal and may allow one to grasp and tear the seal to open bag 1 1 1.
- the ability to tear seal 130 to rupture film 100 will depend on the film thickness and the extent to which formation of seal 130 has weakened base 131 of the seal or the area around the base of the seal. Alternatively, a plurality of perforations may be placed near or along base 131 of seal 130 to aid in rupturing the film. Film 100 may also be ruptured by cutting. In the embodiment shown in FIG. 13, side wall 212 is secured to inner face
- film 200 preferably has at least one curved region. In the embodiment shown in FIG. 13, film 200 has three curved regions 201a-201c and includes a U-shaped region 202 that functions as a gusset as described above. Film 200 and slider 35 (not shown in this figure) will not interfere with each other in this and similar embodiments (e.g., FIGS. 14 and 15) and the necessity of sealing two layers of film 200 is avoided.
- the sheet of plastic film 200 preferably has a plurality of perforations for facilitating its rupture.
- the plurality of perforations is preferably located in any of the curved regions 201a-201c but may be located at other places on film 200 as one skilled in the art would appreciate. Alternately, film 200 may be ruptured by cutting.
- FIG. 14 is similar to that shown in FIG. 13 except that only one curved region 301 is present.
- Side walls 212 and 213 are secured to inner faces 82 and 83 of flexible plastic strips 122 and 125, respectively, in a region of the side walls closer to profile element 127, upper regions 290 and 291 of side walls 212 and 213, respectively.
- This configuration allows for minimal spreading of fastener 121. That is, the flexible plastic strips of fastener 121 minimally spread from each other when the rib and groove profile elements 126, 127, 130 and 131 are in a non-interlocked configuration. Moreover, less excess film is present in this embodiment, thus minimizing interference of the film with the fastener.
- the sheet of plastic film 300 preferably has a plurality of perforations for facilitating its rupture.
- the plurality of perforations is preferably located at curved region 301 but may be located at other places on film 300 as one skilled in the art would appreciate. Alternately, film 300 may be ruptured by cutting.
- FIG. 15 is similar to that shown in FIG. 14 with the exception that the region of side walls 212 and 213 that are secured is more distant from profile element 127 than the region of side walls secured in the embodiment shown in FIG. 14. Specifically, region 203 of side wall 212 is secured to inner face 82 of flexible plastic strip 122 and a similar region (not shown) of side wall 213 is secured to inner face 83 of flexible plastic strip 125.
- curved region 301 is replaced by a double layer of film joined together and defining a seal 230 that extends along the width of film 200. Seal 230 may involve the two ends of film being secured together or may involve collapsing and sealing curved region 301 in FIG. 14.
- film 200 extends along planes oblique to a plane passing between inner face 82 and outer face 80 of flexible plastic strip 122 and a plane passing between inner face 83 and outer face 81 of flexible plastic strip 125.
- base 231 of seal 230 may be weakened as a result of formation of the seal and may allow one to grasp and tear the seal to open bag 211.
- a plurality of perforations may be placed along base 231 of seal 230 to aid in rupturing the film.
- Film 200 may also be ruptured by cutting.
- FIG. 16 depicts a plastic film bag wherein side wall 12 is secured to outer face 80 of flexible plastic strip 122 and side wall 13 is secured to outer face 81 of flexible plastic strip 125.
- a sheet of plastic film 400 is disposed between side walls 12 and 13 and, in this embodiment, is also disposed between the pair of flexible plastic strips 122 and 125.
- Film 400 preferably has at least one curved region 401 and is typically secured to the pair of flexible plastic strips 122 and
- film 400 may be secured to the pair of flexible plastic strips by other methods known in the art, including heat sealing.
- film 400 may have a plurality of perforations for facilitating its rupture or may simply be cut through.
- film 400 may be manually removed for entry into the bag.
- the sheet of flexible plastic film disposed between the side walls can have regions other than curved regions, including pleats and other forms of folds that will act as a gusset.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99926133A EP1115625B1 (en) | 1998-06-04 | 1999-06-02 | Tamper evident slider zipper |
DE69931172T DE69931172T2 (en) | 1998-06-04 | 1999-06-02 | SLIDER PROFILE CLOSURE WITH ORIGINALITY ASSURANCE |
AU42290/99A AU4229099A (en) | 1998-06-04 | 1999-06-02 | Tamper evident slider zipper |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/090,851 | 1998-06-04 | ||
US09/090,851 US6257763B1 (en) | 1997-04-08 | 1998-06-04 | Tamper evident zipper slider |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999062781A1 true WO1999062781A1 (en) | 1999-12-09 |
Family
ID=22224630
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1999/012244 WO1999062781A1 (en) | 1998-06-04 | 1999-06-02 | Tamper evident slider zipper |
Country Status (6)
Country | Link |
---|---|
US (1) | US6257763B1 (en) |
EP (1) | EP1115625B1 (en) |
AT (1) | ATE325046T1 (en) |
AU (1) | AU4229099A (en) |
DE (1) | DE69931172T2 (en) |
WO (1) | WO1999062781A1 (en) |
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- 1999-06-02 DE DE69931172T patent/DE69931172T2/en not_active Expired - Fee Related
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US7254873B2 (en) * | 1998-06-04 | 2007-08-14 | Illinois Tool Works, Inc. | Scored tamper evident fastener tape |
US6293701B1 (en) | 1998-11-18 | 2001-09-25 | Mladomir Tomic | Resealable closure mechanism having slider device and methods |
EP1106337A2 (en) * | 1999-12-02 | 2001-06-13 | Reynolds Consumer Products, Inc. | Methods of manufacturing reclosable packages having a slider device |
WO2001053158A2 (en) * | 2000-01-18 | 2001-07-26 | Reynolds Consumer Products, Inc. | Reclosable package having slider device and tamper-evident structure |
JP2001247137A (en) * | 2000-01-18 | 2001-09-11 | Reynolds Consumer Prod Inc | Slider, and reclosable package having tamper-evident mechanism |
EP1129955A3 (en) * | 2000-01-18 | 2001-09-12 | Reynolds Consumer Products, Inc. | Reclosable package having slider device and tamper-evident structure |
WO2001053158A3 (en) * | 2000-01-18 | 2002-02-07 | Reynolds Consumer Prod | Reclosable package having slider device and tamper-evident structure |
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EP1223111A3 (en) * | 2001-01-16 | 2003-05-07 | Illinois Tool Works Inc. | Tamper evident resealable packaging |
US6799890B2 (en) | 2001-01-16 | 2004-10-05 | Illinois Tool Works Inc. | Tamper evident resealable packaging |
EP1223111A2 (en) * | 2001-01-16 | 2002-07-17 | Illinois Tool Works Inc. | Tamper evident resealable packaging |
EP1251075A3 (en) * | 2001-04-18 | 2003-02-05 | Kraft Foods Holdings, Inc. | Fastener closure arrangement for flexible packages |
EP1251075A2 (en) * | 2001-04-18 | 2002-10-23 | Kraft Foods Holdings, Inc. | Fastener closure arrangement for flexible packages |
AU782074B2 (en) * | 2001-04-18 | 2005-06-30 | Kraft Foods Group Brands Llc | Fastener closure arrangement for flexible packages |
EP1266836A1 (en) * | 2001-06-15 | 2002-12-18 | Reynolds Consumer Products, Inc. | Tamper-evident slider bag having zipper-protective cover and method of using it |
EP1551248A2 (en) * | 2002-06-17 | 2005-07-13 | Pliant Corporation | Peel seal tamper evident slider bag |
EP1551248A4 (en) * | 2002-06-17 | 2009-11-25 | Illinois Tool Works | Peel seal tamper evident slider bag |
Also Published As
Publication number | Publication date |
---|---|
EP1115625A4 (en) | 2002-03-27 |
EP1115625A1 (en) | 2001-07-18 |
AU4229099A (en) | 1999-12-20 |
DE69931172T2 (en) | 2007-03-08 |
DE69931172D1 (en) | 2006-06-08 |
ATE325046T1 (en) | 2006-06-15 |
EP1115625B1 (en) | 2006-05-03 |
US6257763B1 (en) | 2001-07-10 |
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